Vulnerability-Lookup

GHSA-9HXF-W2GF-J4WV

Vulnerability from github – Published: 2026-11-05 06:34 – Updated: 2026-11-05 06:34

Details

iTerm2 before 3.7.7beta2 has an argument injection vulnerability in the x-man-page: URL handler, allowing an attacker to execute arbitrary commands with the privileges of the logged-in user by inducing the user to open a crafted URL in iTerm2. Percent-encoded NUL characters survive input sanitization and are subsequently converted to whitespace during command-line parsing, allowing injection of additional arguments to /usr/bin/man. An attacker can inject the -P option to select an attacker-controlled pager command. NOTE: this issue exists because of an incomplete fix for CVE-2023-46321.

Severity

8.7 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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{
  "affected": [],
  "aliases": [
    "CVE-2026-123014"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-88"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-11-05T06:17:07Z",
    "severity": "HIGH"
  },
  "details": "iTerm2 before 3.7.7beta2 has an argument injection vulnerability in the x-man-page: URL handler, allowing an attacker to execute arbitrary commands with the privileges of the logged-in user by inducing the user to open a crafted URL in iTerm2. Percent-encoded NUL characters survive input sanitization and are subsequently converted to whitespace during command-line parsing, allowing injection of additional arguments to /usr/bin/man. An attacker can inject the -P option to select an attacker-controlled pager command. NOTE: this issue exists because of an incomplete fix for CVE-2023-46321.",
  "id": "GHSA-9hxf-w2gf-j4wv",
  "modified": "2026-11-05T06:34:37Z",
  "published": "2026-11-05T06:34:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-123014"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.com/gnachman/iterm2/-/commit/314ba43920dbce08808c032e89966918090bdf8e"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.com/gnachman/iterm2/-/commit/f29420ae4d3e0f986ee24ea286885d32af58175a"
    },
    {
      "type": "WEB",
      "url": "https://iterm2.com/downloads.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-123014 (GCVE-0-2026-123014)

Vulnerability from cvelistv5 – Published: 2026-11-05 05:25 – Updated: 2026-11-05 05:25

Summary

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CWE

CWE-88 - Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

Assigner

mitre CNA under the mitre root

CNA scorecard E 28/100 over 2260 records in the last 180 days details

References

3 references

URL	Tags
https://gitlab.com/gnachman/iterm2/-/commit/f2942…	patch
https://iterm2.com/downloads.html	release-notes
https://gitlab.com/gnachman/iterm2/-/commit/314ba…	patch

Impacted products

1 product

Vendor	Product	Version
iTerm2	iTerm2	Affected: 0 , < 3.7.7beta2 (custom) cpe:2.3:a:iterm2:iterm2::::::::

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "modules": [
            "x-man-page: URL handler"
          ],
          "platforms": [
            "MacOS"
          ],
          "product": "iTerm2",
          "programFiles": [
            "sources/iTermSessionLauncher.m"
          ],
          "programRoutines": [
            {
              "name": "profileByModifyingProfile:toShowManPage:"
            },
            {
              "name": "sanitizedCommand:"
            }
          ],
          "repo": "https://gitlab.com/gnachman/iterm2",
          "vendor": "iTerm2",
          "versions": [
            {
              "lessThan": "3.7.7beta2",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "configurations": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eA vulnerable version of iTerm2 must be installed and receive the crafted x-man-page: URL. For browser-based delivery, iTerm2 must be selected as the application that handles this URL scheme. The user opens the crafted link, and an additional browser or macOS confirmation to launch iTerm2 may be required depending on the configuration.\u003c/p\u003e"
            }
          ],
          "value": "A vulnerable version of iTerm2 must be installed and receive the crafted x-man-page: URL. For browser-based delivery, iTerm2 must be selected as the application that handles this URL scheme. The user opens the crafted link, and an additional browser or macOS confirmation to launch iTerm2 may be required depending on the configuration."
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:iterm2:iterm2:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "3.7.7beta2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "iTerm2 before 3.7.7beta2 has an argument injection vulnerability in the x-man-page: URL handler, allowing an attacker to execute arbitrary commands with the privileges of the logged-in user by inducing the user to open a crafted URL in iTerm2. Percent-encoded NUL characters survive input sanitization and are subsequently converted to whitespace during command-line parsing, allowing injection of additional arguments to /usr/bin/man. An attacker can inject the -P option to select an attacker-controlled pager command. NOTE: this issue exists because of an incomplete fix for CVE-2023-46321."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "PASSIVE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-88",
              "description": "CWE-88 Improper Neutralization of Argument Delimiters in a Command (\u0027Argument Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-11-05T05:25:55.141Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "patch"
          ],
          "url": "https://gitlab.com/gnachman/iterm2/-/commit/f29420ae4d3e0f986ee24ea286885d32af58175a"
        },
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://iterm2.com/downloads.html"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://gitlab.com/gnachman/iterm2/-/commit/314ba43920dbce08808c032e89966918090bdf8e"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eThe maintainer confirms that the fix first shipped in iTerm2 3.7.7beta2 and will be included in the 3.7.7 stable release. The x-man-page: handler now validates manual-page sections and page names against an allowlist of characters. URLs containing NUL or other disallowed characters are rejected with a warning. Users should upgrade to a release containing this fix.\u003c/p\u003e"
            }
          ],
          "value": "The maintainer confirms that the fix first shipped in iTerm2 3.7.7beta2 and will be included in the 3.7.7 stable release. The x-man-page: handler now validates manual-page sections and page names against an allowlist of characters. URLs containing NUL or other disallowed characters are rejected with a warning. Users should upgrade to a release containing this fix."
        }
      ],
      "x_generator": {
        "engine": "CVE-Request-form 0.0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2026-123014",
    "datePublished": "2026-11-05T05:25:55.141Z",
    "dateReserved": "2026-11-05T05:25:54.727Z",
    "dateUpdated": "2026-11-05T05:25:55.141Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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